Topic: 1970 Firewall Blower Motor Shield Question

[67shelby]

Ok Bob, are you busy next week?  I'll come down and look at your 69 and we can come up and look at the 70 and see if we can figure it out.

[Bob Gaines]

Ok Bob, are you busy next week?  I'll come down and look at your 69 and we can come up and look at the 70 and see if we can figure it out.

Too busy for all that  although I am sure I would enjoy the company. I am sure we can accomplish figuring out this detail with a few calls . Let  me check into it like I already said . If you really do want to come down the end of the week is best for me.

[67shelby]

I'm in no hurry, I pretty much go to Mustang Plus on Wednesdays....  That is always a good day to do that kind of stuff.

[Bob Gaines]

I'm in no hurry, I pretty much go to Mustang Plus on Wednesdays....  That is always a good day to do that kind of stuff.

Lorne, bring the 70 assembly manual with you and call me when you are at Joe's on Wed or let me know when you think you will be there.  I will come over  I have asked around and others are unaware of the cancelling this bracket for a 70 non A/C cars.

[J_Speegle]

This is a non-air car (drag pack).  In looking at the Osbourne production manuals, the part is listed on the pages with air conditioning and only one page that shows what might be non air cars which was marked as CANCELLED. ..............

Do you have the date from that page that you could share?

Would offer that I do have pictures of non-AC CJ cars from 1970 (unrestored) with the shields in place

Maybe this is a running change or the assembly manual is not correct.  Both, at this point IMHO, are possibilities worth discussing

[Vcode]

The 1970 Osborn Electrical Assembly manual on page 45 under the Heater & Defroster (V8's) has the shield removal note (note 15).
On page 49 Power Ventilation (V8's) page it shows the shield and has the shield removal note (note 24). This page has CANCELLED stamped on it Date: 6-20-69 Supersedes 11-25-68

[J_Speegle]

The 1970 Osborn Electrical Assembly manual on page 45 under the Heater & Defroster (V8's) has the shield removal note (note 15).
On page 49 Power Ventilation (V8's) page it shows the shield and has the shield removal note (note 24). This page has CANCELLED stamped on it Date: 6-20-69 Supersedes 11-25-68

Thanks that helps allot to place and compare things to.

The date seems to be in conflict with examples of how cars were actually built. There might be a later page (not included in Jim's selection of pages used to assemble the printed manuals) that reinstated the practice.

[Bob Gaines]

Thanks that helps allot to place and compare things to.

The date seems to be in conflict with examples of how cars were actually built. There might be a later page (not included in Jim's selection of pages used to assemble the printed manuals) that reinstated the practice.

I haven't seen the manual yet to get a feel for the context of the "cancelled"word but just a thought , could the "cancelled" be in reference to the engineering direction for removal of the shield after the engine was installed? Just because so many were left on anyway .

[7Lscjracer]

More likely cancelled is referring to power ventilation

[Vcode]

The CANCELLED is stamped in the middle of the drawing.

The date is in the lower left corner of the drawing
Here's the complete text

Date 6-20-69 SUPERSEDES 11-25-68
Effective with CZYI-PR-958337
REMOVED PAGE FROM MANUAL

[67shelby]

Bob, I'll call you in the AM when I get to Joes and will bring the manual and the bracket.  It is the pages that have been discussed above.  This is the only page in the 70 manual that I can find that actually has a picture of the bracket with a heater motor instead of the AC expansion valve. The cancellation probably has nothing to do with the bracket, only power ventilation.

I went back through a bunch more photos after seeing your suggestion about the witness line and I have found one where the lighting might suggest that there was a lack of sound deadner.  All the other pictures the lighting didn't really show it.  I've gone back to see if it looks as though the studs stuck out further so a nut could be mounted on top of bracket as I think you're suggesting.  I can't really tell by the pictures 100%, but it might be that the new firewall pad may be thicker and I'm not getting as many threads exposed on top of the bracket. As it stands, unless I can get more length out of the studs, I'm not going to get more than one nut to secure the bracket that I have.

Jeff, yes I'd like to see pictures of 69-70 non-air cars please. Most of the examples I've seen are for early cars or cars with air.

[J_Speegle]

Jeff, yes I'd like to see pictures of 69-70 non-air cars please. Most of the examples I've seen are for early cars or cars with air.

Here you go - from Dearborn and NJ examples. Sorry some of them are from low resolution pictures owners provided.  In some you can barely make out part of the shield. Did not include any restored cars for obvious reasons.

[Cobrajet428]

My Dearborn October '69-built 1970 CJ 4spd Mach 1 has the shield also with no holes drilled in the firewall to retain it, just dimples. The rightmost blower motor stud barely protrudes enough through the shield to get a nut over it, but that's what it uses to hold it there.

[Bob Gaines]

After reviewing the page in the 1970 assembly manual Weds with the OP it is obvious that the "canceled" label had about as much to do with the heat shield as it did anything else in the illustration which was a illustration of the entire engine compartment with out anything in particular being singled out or highlighted.  The OP found some pre restoration photos which showed the shadow (witness line)of where his shield was before. This indicates that ia shield was in fact installed on the car at one time. I think the OP may be back here to post some pictures showing the witness line. I believe he decided he was going to install the shield back with just the 2 bolts (one way they are seen) and borrow my body shootz gun to apply some sealer around the shield like it was done typically and what his pictures show was done in his case too for a more authentic look.   

[SAcobra427]

I'm working on a 1970 SCJ Mach 1 built in Dearborn on October 11, 1969.  I've owned the car since 1980.  My question is about the blower motor shield, when I disassembled the car, there was not one present.  I don't ever recall one being on the car as far as I can remember.  I have acquired one and when I was getting ready to install it, I saw examples on cobrajet.org (https://www.428cobrajet.org/id-firewall-shield) I have the one on the left.  But on the second picture down it shows that there are two screws that hold the bracket in place as well as two of the nuts from the blower motor.  I have attached a picture of my firewall before metal work was started and as you can see, there are two dimples (circled) where the two screws would be, but as you can see, they were not ever used.  I've seen some posts from Bob Gaines saying he'd never seen one without a shield, but did all cars get a shield and not have the two screws to hold them in place?

I know you were interested in a 70 Dearborn but just wanted to add that my Jan.10th 1969 built Q code also had the shield but never had the firewall drilled for the screws, just the dimples are there